Doctors in Brazil discover and confirm that a woman has blood with male chromosomes, a rare case of human chimerism.

Just 1 in 30,000 pregnancies occurs in the abdomen instead of the uterus, and those that make it to full term “are essentially unheard of — far, far less than 1 in a million,” said Dr. John Ozimek, ...

It's a common condition involving hypertension with serious consequences when left untreated. A Texas OB-GYN explains why she ...

Pink dye and blue dye pregnancy tests are home urine tests that check for the pregnancy hormone hCG to tell you if you’re ...

Many medical organizations and frontline health care providers are grappling with a challenge they haven’t had to face in many years: how to protect newborns against hepatitis B. Last week, a federal ...

Scientists may have uncovered an important aspect of long covid. Recent research appears to show that the blood of these patients often contains unusual clusters of microscopic material. Researchers ...

Getting your blood drawn usually takes less than three minutes. Blood test results can be ready from a few minutes to a few weeks, depending on the test. A blood draw is a medical procedure used to ...

The best time to take a pregnancy test is the first day after a missed period. You should wait 21 days after unprotected sex if you don't know when your period is due. Whether you're actively trying ...

After a prenatal test revealed that she had cancer, Dr. Sara Teichholtz (shown here with her 4-year-old son) was treated at MSK for cholangiocarcinoma. Nearly three years later, she has no evidence of ...

Blood draws for several kinds of diagnostic tests require you to fast for several hours. Eating or drinking anything besides water can skew the results, leading to you needing to be retested. You may ...